CN106960603A - A kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment - Google Patents

Abstract

The invention relates to a road traffic accident prevention and control system based on a vehicle-mounted recording device, comprising a collision signal recognition unit, a WMAN unit, a GPS positioning and calculation unit, and a voice reminder unit connected in sequence, and the collision signal recognition unit is connected to the vehicle-mounted recording device. Compared with the prior art, the present invention introduces WMAN wireless metropolitan area network technology, fully combines and exerts its function similar to a router, thereby sending wireless network signals to the surroundings, and uses the collision trigger recording function of the vehicle-mounted recording device as the input of the collision signal , has the advantages of easy implementation, convenient installation, and avoidance of accidents missed by collision sensors.

Description

A road traffic accident prevention and control system based on vehicle-mounted recording equipment

technical field

The invention relates to the technical field of automobile derivative equipment, in particular to a road traffic accident prevention and control system based on a vehicle-mounted recording device.

Background technique

While my country's economy is growing rapidly, the number of automobiles has been increasing exponentially, and its production and sales are also increasing year by year. However, the number of traffic accident deaths in my country has always been the highest in the world, and multi-vehicle traffic accidents, especially multi-vehicle rear-end collision accidents on expressways, often cause serious mass deaths and injuries, which greatly threatens drivers and passengers. life safety. Therefore, to effectively avoid this kind of multi-vehicle accident involving mass death and mass injury, the first thing to bear the brunt is to have an immediate and effective method to quickly remind subsequent vehicles when an accident occurs, so that it can avoid the accident vehicle or the accident scene. At present, the most commonly used method is to place warning signs or flash warning lights after the accident to remind follow-up vehicles. However, there is a large time difference in the avoidance effect of this method, and it cannot achieve the effect of instant reminder. In addition, the current smog is frequent, and warning signs or flashing warning lights are placed after the accident, and when the speed of the vehicle is too fast, especially on the expressway, it will not be an effective reminder at all.

With the high-speed development of technology, similar vehicle recording devices such as driving recorders or EDR (Event Data Recorder) have been installed on most cars. Driving recorder, its components include a vehicle speed sensor. When the vehicle speed changes suddenly, once it reaches the set threshold, it will record the driving video of the 10 seconds before the vehicle speed change and the 20 seconds after the vehicle speed change, so that the before and after the event can be completely recorded and cannot be erased. , and the use of this device in automobiles in our country has become common. EDR is a device installed on a car to record vehicle collision or accident information. The installation of this device on cars in my country is currently limited to some brands of cars. Cars must be equipped with EDR, and our country is also making efforts to issue technical regulations on EDR.

In 2011, the patent CN102289951A announced a road traffic accident prevention and control device and method, through 8 modules including wireless transceiver module, collision sensor, and voice reminder module, to sense automobile accidents, and instantly remind the driver of vehicle speed, distance, etc. Although this method can directly send accident information to follow-up vehicles in a very short period of time, and can effectively prevent and control vicious traffic accidents on modern highways, this device is not feasible in both the wireless transceiver module and the collision sensor. Strong limitations, moreover, it contains a lot of modules, and the processing of information is unavoidably cumbersome.

In 2013, the patent CN103231679A announced a car failure and accident reminder, which senses car accidents through collision trigger sensors, and reminds the driver and surrounding vehicles of accidents in front of them through voice announcers and speakers, which can effectively prevent or reduce vehicle accidents. Secondary collisions occur during driving and when a traffic accident occurs. Although this method can be timely and effectively reminded, the scope is limited, and the real-time position of the surrounding vehicle accident cannot be informed. In addition, the reminder through sound transmission is useless on the expressway.

Contents of the invention

The purpose of the present invention is to provide a road traffic accident prevention and control system based on a vehicle-mounted recording device that is easy to implement and easy to install in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A road traffic accident prevention and control system based on a vehicle-mounted recording device, comprising a collision signal recognition unit, a WMAN unit, a GPS positioning and calculation unit, and a voice reminder unit connected in sequence, and the collision signal recognition unit is connected to the vehicle-mounted recording device.

The collision signal recognition unit is connected to the WMAN unit by wire, and the collision input signal unit obtains the collision trigger signal from the vehicle-mounted recording device, outputs it to the WMAN unit and activates the WMAN unit.

The WMAN unit is wirelessly connected to the GPS positioning and calculation unit. After the WMAN unit is activated, it sends a network signal to the GPS positioning and calculation unit of vehicles within a certain range around the vehicle.

The GPS positioning and calculation unit is activated when receiving the WMAN signal. After being activated: the GPS positioning and calculation unit in the accident vehicle continuously sends the real-time position of the vehicle to surrounding vehicles; The GPS positioning and calculation unit receives the real-time position sent by the GPS positioning and calculation unit of the accident vehicle and calculates the relative distance and orientation with the accident vehicle, and outputs the information to the voice reminder unit of the vehicle.

When the GPS positioning and calculation unit is located in the emergency vehicle, only when it enters the WMAN signal radiation range of the accident vehicle and the vehicle is in the ignition state, can it identify and connect to the WMAN signal sent by the accident vehicle.

Described voice reminding unit comprises voice announcer, and this unit has only just just can be activated on the avoidance vehicle, can broadcast the real-time relative distance and the bearing of this car and accident car that GPS location and calculation unit send in real time after activation.

The prevention and control system is installed inside the car, and is provided with two input lines respectively connected to the on-board recording device and the storage battery, and the storage battery is used to provide electric energy.

Compared with the prior art, the present invention has the following advantages:

(1) Introduced WMAN wireless metropolitan area network technology, this technology plays the function similar to router in the present invention, has the function that provides and transmits wireless network signal, has not only replaced the wireless transceiver module in the prior art, has also simplified The cumbersome and difficult-to-implement function of the wireless transceiver module.

(2) Use a collision signal recognition unit to replace the collision sensor used in the prior art. The collision signal recognition unit is connected to the vehicle-mounted recording device. When the vehicle-mounted recording device senses and recognizes a collision event and triggers to record the collision event, the collision signal is input to the vehicle-mounted recording device. unit, thereby triggering the activation of the WMAN unit. The use of this unit not only omits the installation of multiple collision sensors and necessary costs, but also has the function of identifying collisions more accurately, avoiding accidents missed by the collision sensors.

(3) The prevention and control of traffic accidents can be realized through only four units, the principle is simple, the information processing is convenient, and it has strong realizability.

(4) It can timely, effectively and accurately broadcast the relative distance and orientation to the accident vehicle to the drivers and passengers of the avoidance vehicle in real time, so as to remind the drivers and passengers to make reasonable avoidance in time, and can effectively prevent secondary collisions or serial collisions occur.

(5) Small in size, very easy to be installed in the interior of the car, convenient to install, and universal.

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the present invention;

Fig. 2 is a working principle diagram of the present invention;

Fig. 3 is a scene simulation diagram of the present invention.

S1-S6 in the figure is the working sequence of each unit of the system.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

As shown in Figure 1, a road traffic accident prevention and control system based on a vehicle-mounted recording device 6 includes a collision signal identification unit 1, a WMAN unit 2, a GPS positioning and calculation unit 3, and a voice reminder unit 4 connected in sequence. The unit 1 is connected to an on-board recording device 6 . The system is installed inside the car, and two connecting lines are extended outwards, one power input line is connected to the battery 5, and the other is a collision signal input line connected to the on-board recording device 6.

The collision signal identification unit 1 is connected to the WMAN unit 2 by wire, and the collision input signal unit obtains the collision trigger signal from the on-vehicle recording device 6 , outputs it to the WMAN unit 2 and activates the WMAN unit 2 .

The WMAN unit 2 is connected to the GPS positioning and calculation unit 3 in a wireless manner. After the WMAN unit 2 is activated, it functions as a router and sends network signals to the GPS positioning and calculation unit 3 of vehicles within a certain range around the vehicle. In the present embodiment, the WMAN unit 2 output ends to the surrounding 2km (give the driver at least 1 minute of reaction time to avoid danger, calculate according to the expressway maximum speed limit of 120km/h, and this distance also saves costs while reaching effective reminders) Send out encrypted wireless network signals for the GPS positioning calculation unit of the module on the surrounding vehicles to effectively identify and quickly connect.

The GPS positioning and calculation unit 3 includes a wireless input terminal and a wired output terminal, the input terminal receives the WMAN signal, and the output terminal is connected to the voice reminder module. The GPS positioning and calculation unit 3 is activated when receiving the WMAN signal. After being activated: the GPS positioning and calculation unit 3 in the accident vehicle continuously sends the real-time position of the vehicle to surrounding vehicles; The GPS positioning and calculation unit 3 receives the real-time position sent by the GPS positioning and calculation unit 3 of the accident vehicle and calculates the relative distance and orientation with the accident vehicle, and outputs the information to the voice reminder unit 4 of the vehicle.

When the GPS positioning and calculation unit 3 is located in the hedging vehicle, only when it enters the WMAN signal radiation range of the accident vehicle and the vehicle is in the ignition state, can it recognize and connect to the WMAN signal sent by the accident vehicle.

Voice reminding unit 4 comprises voice announcer, and this unit only just can be activated on the hedging vehicle, after activating, can broadcast the real-time relative distance and bearing of this car and the accident car of GPS location and calculation unit 3 sending in real time, and time Effectively remind the driver and occupants of the avoidance vehicle to make reasonable avoidance, and the unit will only be activated on the avoidance vehicle.

Figure 2 shows the working principle diagram of this system. The working principle of the system on the accident vehicle and the emergency vehicle is different. S1-S6 in the figure are the working order of each unit. Regardless of whether a traffic accident occurs, the storage battery 5 and the vehicle-mounted recording device 6 are always in a working state (S1). When a traffic accident occurs, the working principle of the system in the accident vehicle is: the collision input signal unit is connected to the vehicle-mounted recording device 6, and when the vehicle-mounted recording device 6 senses and recognizes a collision event, the output trigger signal is given to the WMAN unit 2 to activate the WMAN unit 2 (S2 ), then the WMAN unit 2 immediately radiates encrypted wireless network signals to vehicles within 2 kilometers around for use by the GPS positioning and calculation unit 3 (S3), and the GPS positioning and calculation unit 3 of the car will be connected to the wireless network signal. Activate (S4), and immediately send the real-time position of the vehicle to the receiving vehicle. This process voice reminder unit 4 does not work.

For the working principle of the described module of the emergency vehicle, when the vehicle installed with the module enters the range of 2 kilometers away from the accident vehicle, the GPS positioning and calculation unit 3 will immediately connect to the wireless network signal (S4), and be in an active state. Receive the real-time position information that accident car sends immediately afterwards, measure and calculate the relative distance and bearing with accident car quickly then, this information is output to voice reminding unit 4 (S5), then voice reminding unit 4 will be broadcasted in the relative position of accident car and direction, to effectively remind drivers and passengers to make reasonable avoidance (S6). The process crash signal recognition unit 1 and WMAN unit 2 do not work.

Figure 3 shows the scenario simulation used by the system. After the accident car has an accident, the collision input unit obtains the collision signal from the on-board recording device 6, and then activates the WMAN unit 2, and the WMAN unit 2 continues to send wireless network signals to the surrounding 2km range, and activates the GPS positioning and calculation unit 3 of the vehicle , to release the real-time location of the vehicle; when the vehicle enters the 2km radiation range of the wireless network, the GPS positioning and calculation unit 3 of the vehicle will quickly identify and connect to the wireless network signal, receive the real-time location of the vehicle in the accident, and then Immediately calculate the relative position and orientation of the vehicle and the accident vehicle, then pass this information to the voice reminder unit 4 of the vehicle, which will continue to broadcast the relative position and orientation of the vehicle and the accident vehicle, reminding the vehicle to slow down in advance, Make reasonable avoidance. The arrow in the figure is the avoidance path to be taken by the avoidance vehicle, driving into the avoidance lane to avoid danger. Then the pre-avoidance vehicle drives in, becomes a new avoidance vehicle, and repeats the corresponding avoidance work. In the end, the two vehicles successfully avoided the accident and prevented a series of rear-end collisions.

Claims (8)

1. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment, including the collision alarm identification being sequentially connected are single Member, WMAN units, GPS location and measuring and calculating unit, it is characterised in that the collision alarm recognition unit connects vehicle-mounted recording equipment And obtain vehicle status data from vehicle-mounted recording equipment and judge whether vehicle collides.

2. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists In the prevention and control system also includes voice reminder unit.

3. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists The WMAN units are connected by wired mode in, the collision alarm recognition unit, the collision input signal unit is from car Record recording apparatus to obtain after collision trigger signal, be output to WMAN units and activate WMAN units.

4. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists In, the WMAN units wirelessly connect the GPS location and measuring and calculating unit, after the WMAN units are activated, to The GPS location of vehicle and measuring and calculating unit send network signal in surrounding's certain limit including this car.

5. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists In the GPS location and measuring and calculating unit are activated when receiving WMAN signals, after being activated：GPS location in accident vehicle And measuring and calculating unit, constantly it can receive the real time position that vehicle sends this car to surrounding；GPS location and survey in hedging car Unit is calculated, the real time position and the relative distance and side of measuring and calculating and accident vehicle of accident vehicle GPS location and measuring and calculating unit transmission is received Position, by the voice reminder unit of the information output to this car.

6. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists When, the GPS location and measuring and calculating unit are located in hedging car, only enter in the range of the WMAN signals radiation of accident vehicle and this When car is in fired state, the WMAN signals that accident vehicle is sent could be recognized and connected.

7. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists In the voice reminder unit includes voice announcer, and the unit only can just be activated on hedging vehicle, can after activation This car and the real-time relative distance and orientation of accident vehicle that real-time broadcasting GPS location and measuring and calculating unit are sent.

8. a kind of road traffic accident prevention and control system based on vehicle-mounted recording equipment according to claim 1, its feature exists In the prevention and control system is installed on automotive interior, provided with connection vehicle-mounted recording equipment respectively and two input lines of battery, stores Battery is used for providing electric energy.